What does a white line marking indicate?

Answer: B — Separate same direction of traffic

A white line marking on the road serves to separate lanes of traffic that are moving in the same direction. This marking helps organize the flow of traffic, clearly indicating where one lane ends and another begins. It is crucial for maintaining orderly traffic movement and promotes safety by reducing the risk of collisions that could occur if drivers were unaware of the lane boundaries. The presence of these lines informs drivers of their lane positions and encourages them to remain in their designated lanes while on the roadway.